• 专利标题:   Fabricating solid-state electrochemical cell comprises fabricating gel-polymer electrolyte layer, fabricating gel-polymer electrolyte layer by forming polymer solution, and submerging support core with interface layer into liquid electrolyte.
  • 专利号:   US11652240-B1
  • 发明人:   ZHOU S, HAN S
  • 专利权人:   GRU ENERGY LAB INC
  • 国际专利分类:   H01G011/30, H01G011/60, H01G011/62, H01M010/052, H01M010/0565, H01M010/058, H01M004/02, H01M004/04, H01M004/134, H01M004/1395, H01M004/38
  • 专利详细信息:   US11652240-B1 16 May 2023 H01M-010/058 202342 English
  • 申请详细信息:   US11652240-B1 US111109 03 Dec 2020
  • 优先权号:   US943154P, US111109

▎ 摘  要

NOVELTY - Fabricating a solid-state electrochemical cell comprises fabricating a gel-polymer electrolyte layer comprising a polymer base and a liquid electrolyte such that the liquid electrolyte is trapped within and supported by the polymer base. The gel-polymer electrolyte layer is fabricated by forming a polymer solution, coated the polymer solution on one side of a support core and heating the polymer solution on one side of the support core for evaporating solvents and forming an interface layer comprising pores on one side of the support core. The support core is submerged with the interface layer into the liquid electrolyte while applying a vacuum over the surface of the liquid electrolyte for driving the liquid electrolyte into the pores of the interface layer. USE - Method for fabricating a solid-state electrochemical cell. ADVANTAGE - The dopant improves the electronic conductivity of negative active layer, electronic conductivity within each of negative active material structures, and helps to drive ionic conductivity within negative active material structures during charging and discharging of the cell. The integration ensures sufficient charge transfer within the electrode volume and provides robust interfaces between the electrodes and electrolyte layers. DETAILED DESCRIPTION - Fabricating a solid-state electrochemical cell comprises fabricating a gel-polymer electrolyte layer comprising a polymer base and a liquid electrolyte such that the liquid electrolyte is trapped within and supported by the polymer base. The gel-polymer electrolyte layer is fabricated by forming a polymer solution, coated the polymer solution on one side of a support core and heating the polymer solution on one side of the support core for evaporating solvents and forming an interface layer comprising pores on one side of the support core. The support core is submerged with the interface layer into the liquid electrolyte while applying a vacuum over the surface of the liquid electrolyte for driving the liquid electrolyte into the pores of the interface layer. A positive electrode is fabricated. A negative electrode is fabricated using a coating technique, where the negative electrode is free from electrolyte materials to interface with the gel-polymer electrolyte layer. The gel-polymer electrolyte layer provides ionic conductivity between the positive electrode and the negative electrode.